253016666 has 16 divisors (see below), whose sum is σ = 434201856. Its totient is φ = 108320976.

The previous prime is 253016653. The next prime is 253016671. The reversal of 253016666 is 666610352.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4895 + ... + 23021.

It is an arithmetic number, because the mean of its divisors is an integer number (27137616).

Almost surely, 2^253016666 is an apocalyptic number.

253016666 is a deficient number, since it is larger than the sum of its proper divisors (181185190).

253016666 is a wasteful number, since it uses less digits than its factorization.

253016666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19133.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 253016666 is about 15906.4976031809. The cubic root of 253016666 is about 632.4842417192.

The spelling of 253016666 in words is "two hundred fifty-three million, sixteen thousand, six hundred sixty-six".